(7.5+2.5)×0.25 | 710-18×4 | 5.4÷18+12 |
2÷× | 2.25×1.8+12.5×0.18 | [1-(+)]×36. |
解:(1)(7.5+2.5)×0.25, =10×0.25, =2.5; (2)710-18×4, =710-72, =638; (3)5.4÷18+12, =0.3+12, =12.3; | ||
(4)2÷×, =×, =; (5)2.25×1.8+12.5×0.18, =(22.5+12.5)×0.18, =35×0.18, =6.3; (6)[1-()]×36, =(1-)×36, =×36, =6. |
科目:小學數學 來源: 題型:
(7.5+2.5)×0.25 | 710-18×4 | 5.4÷18+12 | ||||||||
2÷
|
2.25×1.8+12.5×0.18 | [1-(
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99×105-99×5 | 83.69-(16.7+3.69) | 4.38+(8.31-1.57)+24.3 |
9.8×4.5+0.2×4.5 | 14700-14700÷28+0.78 | 18.59-9.08-0.92. |
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